12,732 research outputs found
DNA damage in Eelpout (Zoarces viviparus) from Göteborg harbor: a Comet assay evaluation
No full textMABS validation through repeated execution and data mining analysis
No full textAgent Based Modelling is the most interesting and advanced approach for simulating a complex system: in a social context, the single parts and the whole are often very hard to describe in detail. Besides, there are agent based formalisms which allow to study the emergency of social behaviour with the creation and study of models, known as artificial societies. Thanks to the ever increasing computational power, it's been possible to use such models to create software, based on intelligent agents, which aggregate behaviour is complex and difficult to predict, and can be used in open and distributed systems. Data mining is born in the last decades in order to help users in finding useful knowledge from the otherwise overwhelming amount of data available nowadays from the web and the data collected every day by companies. Data Mining techniques can therefore be the keystone to reveal non-trivial knowledge expressed by the initial assumption used to build the micro-level of the model and the structure of the society of agents that emerged from the simulation
An Experimental Comparison of RISC-V Processors: Performance, Power, Area and Security - Special Session Paper
No full textThe RISC-V instruction set architecture (ISA) has garnered significant interest from both industry and academia because of its open source nature. Recent years have witnessed a surge in published implementations of the RISC-V ISA, with various companies actively pursuing its adoption in their products. However, a comprehensive analysis comparing these emerging RISC-V processors with each other and against established embedded computing platforms has not yet been published. This paper presents an experimental evaluation of three high-performance RISC-V processors: BOOM, NOEL-V, and CVA6 (formerly Ariane). The investigation is conducted on a Xilinx Kintex-7 Field-Programmable Gate Array (FPGA) platform. We perform a detailed analysis of critical performance metrics, covering area footprint, power consumption, and performance efficiency. Additionally, we assess the security posture of these cores against transient execution attacks, a prominent contemporary security threat. Finally, a comparative evaluation is undertaken between the RISC-V processors and two conventional application-level ARM processors to elucidate technological discrepancies and application suitability. This analysis aims to provide valuable insights into the current state and potential of RISC-V processors within the embedded computing domain
Facades of the Libreria di San Marco in Venice, The: An Interpretation of the Design Process
No full text"A new work in which I propose an interpretation of the design process Sansovino used to create the magnificent facades of the Libreria di San Marco in Venice, a masterpiece of Renaissance architecture." Sent to Marquand librarian by author Dec. 202
Lightweight Instrumentation for Accurate Performance Monitoring in RTOSes
No full textEvaluating performance metrics in embedded systems poses challenges, particularly due to the limited set of tools available for monitoring performance counters. In addition, performance evaluation frameworks for Real-Time Operating Systems (RTOSes) often lack the sophistication and capabilities available in general-purpose operating systems like Linux, which benefit from utilities such as perf_event. To bridge this gap, this paper presents an accurate and low-overhead instrumentation utility tailored for RTOSes. Our approach utilizes performance monitoring counters to observe individual user applications within the RTOS environment. Importantly, it enables comprehensive application monitoring by strategically placing probes at points of inherent system interference, thereby minimizing additional overhead. A pre-calibration of these probes allows for fine-grained measurements within user applications. This results in the elimination of 100 % of the overheads for most counters in our test configuration, impacting the context switch by only three additional instructions per monitored counter
Art without an Author: Vasari’s Lives and Michelangelo’s Death
No full textMonografia sulla rappresentazione di Michelangelo nelle due edizioni delle Vite, sulla storia del libro e la questione della sua paternitàBook dedicated to the representation of Michelangelo in Vasari's Lives of the Artists, to the history of the book, and to the problem of its authorshi
How to prevent crimes using earthquakes
No full textIn this chapter the author describes how techniques coming from earthquakes prediction has been used to produce successful mathematical models useful in preventing crimes
DNA damage in the eelpout (Zoarces viviparus) from Göteborg harbor: a comet assay evaluation
No full textNanoparticles exhibiting self-regulating temperature as innovative agents for Magnetic Fluid Hyperthermia
No full textDuring the last few years, for therapeutic purposes in oncology, considerable attention has been focused on a method called magnetic fluid hyperthermia (MFH) based on local heating of tumor cells. In this paper, an innovative, promising nanomaterial, M48 composed of iron oxide-based phases has been tested. M48 shows self-regulating temperature due to the observable second order magnetic phase transition from ferromagnetic to paramagnetic state. A specific hydrophilic coating based on both citrate ions and glucose molecules allows high biocompatibility of the nanomaterial in biological matrices and its use in vivo. MFH mediator efficiency is demonstrated in vitro and in vivo in breast cancer cells and tumors, confirming excellent features for biomedical application. The temperature increase, up to the Curie temperature, gives rise to a phase transition from ferromagnetic to paramagnetic state, promoting a shortage of the r2 transversal relaxivity that allows a switch in the contrast in Magnetic Resonance Imaging (MRI). Combining this feature with a competitive high transversal (spin-spin) relaxivity, M48 paves the way for a new class of temperature sensitive T2 relaxing contrast agents. Overall, the results obtained in this study prepare for a more affordable and tunable heating mechanism preventing the damages of the surrounding healthy tissues and, at the same time, allowing monitoring of the temperature reached
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